SB2025091938 - Memory leak in Linux kernel printk
Published: September 19, 2025 Updated: September 22, 2025
Security Bulletin ID
SB2025091938
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Memory leak (CVE-ID: CVE-2023-53402)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the pi_create_file() function in kernel/printk/index.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/13969236b6900b5a3625ad2193569588e978f1cc
- https://git.kernel.org/stable/c/2e07fa2e30d48d24a791483774a3d4b76769e0cf
- https://git.kernel.org/stable/c/55bf243c514553e907efcf2bda92ba090eca8c64
- https://git.kernel.org/stable/c/c578a68ffcdc2e8c72556bebdaae2b7500398e81
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.18